linux: pahole flags moved to scripts/Makefile.btf

pahole: added a revamped patch to remove the parallel implementation
kernel: use pahole 1.27 feature of reproducible builds

Author: ader1990

sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/coreos-sources-6.12.20.ebuild

@@ -36,7 +36,7 @@ IUSE=""
 # local patches overlap with the upstream patch.
 UNIPATCH_LIST="
 	${PATCH_DIR}/z0001-kbuild-derive-relative-path-for-srctree-from-CURDIR.patch \
-	${PATCH_DIR}/z0002-revert-pahole-flags.patch \
+	${PATCH_DIR}/z0002-pahole-support-reproducible-builds.patch \
 	${PATCH_DIR}/z0003-Revert-x86-boot-Remove-the-bugger-off-message.patch \
 	${PATCH_DIR}/z0004-efi-add-an-efi_secure_boot-flag-to-indicate-secure-b.patch \
 	${PATCH_DIR}/z0005-efi-lock-down-the-kernel-if-booted-in-secure-boot-mo.patch \

sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-sources/files/6.12/z0002-pahole-support-reproducible-builds.patch

@@ -0,0 +1,26 @@
+From 9faff3734e6456e7927c0914829a4764ec9f1b44 Mon Sep 17 00:00:00 2001
+From: Adrian Vladu <avladu@cloudbasesolutions.com>
+Date: Tue, 17 Sep 2024 13:44:14 +0000
+Subject: [PATCH] pahole: support reproducible builds
+
+---
+ scripts/Makefile.btf | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/scripts/Makefile.btf b/scripts/Makefile.btf
+index 2d6e5ed9081e..b2f88b0fcf37 100644
+--- a/scripts/Makefile.btf
++++ b/scripts/Makefile.btf
+@@ -23,6 +23,9 @@ else
+ # Switch to using --btf_features for v1.26 and later.
+ pahole-flags-$(call test-ge, $(pahole-ver), 126)  = -j --btf_features=encode_force,var,float,enum64,decl_tag,type_tag,optimized_func,consistent_func
+ 
++# Support reproducible builds.
++pahole-flags-$(call test-ge, $(pahole-ver), 127)  = -j --btf_features=encode_force,var,float,enum64,decl_tag,type_tag,optimized_func,consistent_func,reproducible_build
++
+ endif
+ 
+ pahole-flags-$(CONFIG_PAHOLE_HAS_LANG_EXCLUDE)		+= --lang_exclude=rust
+-- 
+2.34.1
+